xworm | 041b2ea848079aab1e0b6bd1a6cf2a89e005b88b8ec2186c349f9f2a8ef0c08c

Analysis

max time kernel
135s
max time network
151s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 04:10

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General

Target

542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe
Size

2.1MB
MD5

f6a8c9894f707a594a924f4c197f0f2a
SHA1

a6cd353fe512a4f1c6d74064979f4475c574ddd7
SHA256

542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696
SHA512

a9e8a3d1705b7f95944a406f7639c07497ae50b9a11b9f77304bcb1d33cda4f3a05c831b47206d153da7c7d9eae22b84e0a17b9aae0ee1f36784acf4b63951b4
SSDEEP

49152:jF50a6aPVOFMx3SmroCZscivbS6mqxEWoKmqZJffp3vSsqPUWeaw1GmNOm/:XroA7PDa

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

twart.myfirewall.org:59012

Mutex

gOdjUs2unoOU0NeI

Attributes

Install_directory
%AppData%
install_file
windows.exe

aes.plain

Signatures

Detect Xworm Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1508-0-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/1508-4-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/1508-2-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Drops startup file 2 IoCs

Processes:

installutil.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windows.lnk	installutil.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windows.lnk	installutil.exe

Loads dropped DLL 1 IoCs

Processes:

installutil.exe

pid process

1508 installutil.exe

pid	process
1508	installutil.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

installutil.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Windows\CurrentVersion\Run\windows = "C:\\Users\\Admin\\AppData\\Roaming\\windows.exe"	installutil.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe

description pid process target process

PID 2200 set thread context of 1508 2200 542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe installutil.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

installutil.exe

description pid process

Token: SeDebugPrivilege 1508 installutil.exe

description	pid	process	target process
PID 2200 set thread context of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe

description	pid	process
Token: SeDebugPrivilege	1508	installutil.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe

description	pid	process	target process
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe
PID 2200 wrote to memory of 1508	2200	542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe	installutil.exe

C:\Users\Admin\AppData\Local\Temp\542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe
"C:\Users\Admin\AppData\Local\Temp\542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2200

C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
2⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:1508

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Roaming\windows.exe
Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
memory/1508-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1508-4-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1508-2-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1508-5-0x000000007451E000-0x000000007451F000-memory.dmp

Filesize
4KB

Download
memory/1508-6-0x000000007451E000-0x000000007451F000-memory.dmp

Filesize
4KB

Download
memory/1508-12-0x0000000074510000-0x0000000074BFE000-memory.dmp

Filesize
6.9MB

Download
memory/1508-13-0x0000000074510000-0x0000000074BFE000-memory.dmp

Filesize
6.9MB

Download